hyperbrachycephalic

adj hy·per·brachy·ce·phal·ic \-ˌbrak-ē-sə-ˈfal-ik\

Medical Definition of HYPERBRACHYCEPHALIC

: having a very round or broad head with a cephalic index of over 85

—hy·per·brachy·ce·pha·ly \-ˈsef-ə-lē\ noun, plural hy·per·brachy·ce·pha·lies

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